Mounted gashammer head, you can replace head use. Used in automotive tire repair and the like. Using steel production, impact- and more use Specifications: Description Air Hammer Head Shank Diameter: 80mm/100mm Choose: Big Hammer: Total Length: 80mm Plane diameter: 35mm Small Hammer: Total Length: 100mm Plane diameter: 30mm Application: Ideal for general knockin, rusting removal. Applicable to paint, auto repair, hardware, ceramic lighting, stone processing, wall treatment (construction), carving process, grinding and other operations. Material: steel colour: Black grey Package Contents: 2 x Air Hammer Head Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.